The impact on the US and Europe is beginning to ease! But don't get too excited yet.
As previously analyzed, negotiations have begun.
Actually, Trump never intended to acquire Greenland. Denmark would never agree, and Europe is not to be trifled with; he knew this all along.
Trump has always hidden his true motives in exaggerated statements, like his threat to impose 100% tariffs on China.
This potential landmine can probably be ruled out for now. It's highly unlikely the negotiations will break down, because what Trump wants is rare earth mining in Greenland, not war.
Additionally, there's a small chance we should pay attention to Greenland's military significance.
The shortest path (great circle) for Russian missiles to reach the US passes right over Greenland.
Therefore, if Russia launches a missile at the US, it could be intercepted in Greenland. So the US might want more control over Greenland, and there might be some controversy in this regard.
The distribution of the value of the rare earth elements alone is unlikely to be a major point of contention.